general protection fault, probably for non-canonical address 0xdffffc0000000069: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000348-0x000000000000034f] CPU: 0 PID: 7881 Comm: syz-executor.5 Not tainted 5.6.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rose_send_frame+0x161/0x290 net/rose/rose_link.c:101 Code: 41 5e 5d c3 80 3c 02 00 0f 85 24 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 4b 20 49 8d b9 48 03 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 08 01 00 00 49 8b 91 48 03 00 00 e9 e3 fe ff ff RSP: 0018:ffff8880aec09ad8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff88809b760800 RCX: 0000000000000006 RDX: 0000000000000069 RSI: ffffffff87ec4dc0 RDI: 0000000000000348 RBP: ffff8880aec09b08 R08: ffffed101298529d R09: 0000000000000000 R10: ffffed101298529c R11: ffff888094c294e3 R12: ffff88809b760800 R13: 0000000000000078 R14: ffff888097a761c0 R15: ffff888097a761c0 FS: 0000000001c17940(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1cd83a1000 CR3: 000000009c1f9000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rose_transmit_clear_request+0x1d0/0x290 net/rose/rose_link.c:255 rose_rx_call_request+0x399/0x2258 net/rose/af_rose.c:976 rose_loopback_timer+0x11f/0x430 net/rose/rose_loopback.c:100 call_timer_fn+0x169/0x570 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] run_timer_softirq+0xd58/0x1330 kernel/time/timer.c:1786 __do_softirq+0x262/0x9a8 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19a/0x1d0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:546 [inline] smp_apic_timer_interrupt+0x1a6/0x5f0 arch/x86/kernel/apic/apic.c:1146 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:stream_open+0x0/0x60 fs/open.c:1334 Code: 84 d2 75 07 83 66 7c e3 31 c0 c3 55 48 89 e5 50 48 89 75 f8 e8 21 06 f9 ff 48 8b 75 f8 31 c0 83 66 7c e3 c9 c3 0f 1f 44 00 00 <48> 8d 7e 7c 55 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 89 e5 48 RSP: 0018:ffff88809c51fe20 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: ffff888092810340 RCX: 0000000000000000 RDX: 1ffff1101250209a RSI: ffff888092810340 RDI: ffff8880a669eac0 RBP: ffff88809c51fe48 R08: ffffed1012502081 R09: ffffed1012502081 R10: ffffed1012502080 R11: ffff888092810403 R12: ffff8880a669ea00 R13: ffff8880a669eac0 R14: ffff8880a669ea00 R15: 000000000000000a sock_map_fd net/socket.c:435 [inline] __sys_socket+0x102/0x1c0 net/socket.c:1530 __do_sys_socket net/socket.c:1535 [inline] __se_sys_socket net/socket.c:1533 [inline] __x64_sys_socket+0x6e/0xb0 net/socket.c:1533 do_syscall_64+0xca/0x630 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c377 Code: 00 00 00 49 89 ca b8 36 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 9a 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 b8 29 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 7d 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fffb3083868 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 0000000000710b00 RCX: 000000000045c377 RDX: 0000000000000006 RSI: 0000000000000001 RDI: 000000000000000a RBP: 0000000000000005 R08: 0000000000006000 R09: 0000000000004000 R10: 00007fffb3083990 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffb3084030 R14: 0000000000000029 R15: 00007fffb3084040 Modules linked in: ---[ end trace e21cb9eb02b52add ]--- RIP: 0010:rose_send_frame+0x161/0x290 net/rose/rose_link.c:101 Code: 41 5e 5d c3 80 3c 02 00 0f 85 24 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 4b 20 49 8d b9 48 03 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 08 01 00 00 49 8b 91 48 03 00 00 e9 e3 fe ff ff RSP: 0018:ffff8880aec09ad8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff88809b760800 RCX: 0000000000000006 RDX: 0000000000000069 RSI: ffffffff87ec4dc0 RDI: 0000000000000348 RBP: ffff8880aec09b08 R08: ffffed101298529d R09: 0000000000000000 R10: ffffed101298529c R11: ffff888094c294e3 R12: ffff88809b760800 R13: 0000000000000078 R14: ffff888097a761c0 R15: ffff888097a761c0 FS: 0000000001c17940(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1cd83a1000 CR3: 000000009c1f9000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400